13+1-5-7=1-8a

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Solution for 13+1-5-7=1-8a equation:


Simplifying
13 + 1 + -5 + -7 = 1 + -8a

Combine like terms: 13 + 1 = 14
14 + -5 + -7 = 1 + -8a

Combine like terms: 14 + -5 = 9
9 + -7 = 1 + -8a

Combine like terms: 9 + -7 = 2
2 = 1 + -8a

Solving
2 = 1 + -8a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '8a' to each side of the equation.
2 + 8a = 1 + -8a + 8a

Combine like terms: -8a + 8a = 0
2 + 8a = 1 + 0
2 + 8a = 1

Add '-2' to each side of the equation.
2 + -2 + 8a = 1 + -2

Combine like terms: 2 + -2 = 0
0 + 8a = 1 + -2
8a = 1 + -2

Combine like terms: 1 + -2 = -1
8a = -1

Divide each side by '8'.
a = -0.125

Simplifying
a = -0.125

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